G320x Wiring to Campbell Breakout E-Stop

[mikkojay]

Hello All,
I am assembling my drive box today and have run into an uncertainty.
I am using a Campbell Breakout board, v 1.7, and I am trying to understand just how I will be able to get its reset/e-stop signals to work hand-in-hand with the G320x's enable/fault pin.

I understand the logic of the G320x enable/fault pin, and have used it successfully in the past.


The part that is getting fuzzy is the integration with the breakout board.
It seems like the breakout board offers an ESTOP to Mach3 when the ground is opened on J21 pins 1 and 2.

I would like to figure out how to have the g320's sudden ground (when a fault occurs) to tell the breakout board go into a fault/estop condition.

Also, since the G320x enable/fault pin requires a temporary +5 for 5 secs on startup, I was also wondering what the best way to integrate this into the whole loop would be. I am thinking that a separate enable switch would be the way to go. I just want to make sure that the g320 fault/ready condition is a part of my overall e-stop loop.

If anyone has any suggestions, or are running a similar setup, I would appreciate any insights you might have to offer.

Thanks, Mike

[mikkojay]

One last note- I may have thought of a workaround that will cover my needs... I was thinking about using the Aux limit switch input pin as a way to tell Mach that the g320's are happy/unhappy. I am about to put together another external switch box like the one I made a few years ago.
If anyone can think of a reason not to use this approach, I would appreciate your feedback.
Thanks, Mike

[morestuff]

Hi Mike,

You can use a 5 volt sensitive relay. Referring to the
diagram from Geckodrive that you posted, put the
coil of the relay where the external LED and series
resistor are show above the PN2907 transistor. Also
put a back EMF protection diode across the coil of
the relay. The relay you select should have a normally
closed contact, and this would be used as part of
the E-Stop loop connected to the breakout board.

The +5 volts powering the relay would need to come
from an isolated supply, not from the breakout board.
If the current is low enough, you may be able to use
the encoder power from the G320.

One example relay that may work is:

Digi-Key - PB818-ND (Manufacturer - JWD-171-17)

This relay also has the back EMF diode supplied internally.

The manual reset switch shown in the Geckodrive
diagram would still function in the same manner.

Regards,
Steve Stallings
www.PMDX.com

[mikkojay]

Thanks Steve-
That sounds simple enough (and I like that )
I might even be able to scrounge one of those up in my junkbox from a past project. The encoders I am using only draw 10ma max, so the encoder supply +5 should have plenty to spare for this.

Thanks, Mike